The "harvest", "end of the age", is when the angels come to gather the "tares" "first" and then "burn them up" (Matthew 13:30). The "burn them up" will be with regards to Matthew 24:21, the "great tribulation", or in the words of Revelation 16:16, Har-Magedon, or with respect to Joel 2:31-32, the "day of the Lord". Whereas the "end of the age" is when the "harvest" occurs (Mt 13:40)
Christ spoke much in parables about a great Day of Judgment when “the Son of man shall come in the glory of his Father … and … shall reward every man according to his works” (Matt. xvi, 27). He compares this Day to the time of harvest, when the tares are burned and the wheat gathered into barns:—
… so shall it be in the end of this world [consummation of the age]. The Son of man shall send forth his angels, and they shall gather out of his kingdom all things that offend, and them which do iniquity; And shall cast them into a furnace of fire: there shall be wailing and gnashing of teeth. Then shall the righteous shine forth as the sun in the kingdom of their Father.—Matt. xiii, 40–43.
The phrase “end of the world” used in the Authorized Version of the Bible in this and similar passages has led many to suppose that when the Day of Judgment comes, the earth will suddenly be destroyed, but this is evidently a mistake. The 220 true translation of the phrase appears to be “the consummation or end of the age.” Christ teaches that the Kingdom of the Father is to be established on earth, as well as in heaven. He teaches us to pray: “Thy Kingdom come, Thy will be done on earth as it is in heaven.” In the parable of the Vineyard, when the Father, the Lord of the Vineyard, comes to destroy the wicked husbandmen, He does not destroy the vineyard (the world) also, but lets it out to other husbandmen, who will render Him the fruits in their season. The earth is not to be destroyed, but to be renewed and regenerated. Christ speaks of that day on another occasion as “the regeneration when the Son of man shall sit in the throne of his glory.” St. Peter speaks of it as “the times of refreshing,” “the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began.” The Day of Judgment of which Christ speaks is evidently identical with the coming of the Lord of Hosts, the Father, which was prophesied by Isaiah and the other Old Testament prophets; a time of terrible punishment for the wicked, but a time in which justice shall be established and righteousness rule, on earth as in heaven.
Bahá’u’lláh and the New Era, pp. 219-220
Mr. Baha, died around 1892, and had no impact on anyone except his son, and apparently you.
You are living in a bubble. The Baha'i Faith is the second most widespread religion in the world, closely trailing Christianity, and all this happened from 1844-1944 AD.
Statistics show that from 1910-2010, the Baha’i Faith grew at a rate of 3.54%, whereas during that time Islam grew at a rate of 1.97% and Christianity grew at a rate of 1.32%.
From 2000-2010 Islam became the fastest growing religion (1.86 %) and the Baha’i Faith was the second fastest growing religion (1.72%).
Statistics from:
Growth of religion - Wikipedia
The growth rates of the Baha’i Faith were higher than Islam from 1910 to 2010 because it includes the “formative age” of the Baha’i Faith (1921-1944)
FOURTH PERIOD: THE INCEPTION OF THE FORMATIVE AGE OF THE BAHÁ’Í FAITH 1921–1944
The goal of the Baha’i Faith administration has not always been to increase numbers of adherents but rather to expand to as many locations as possible around the world.
These goals have been met. The Baha’i Faith has spread to over 250 countries and territories and is almost as widespread as Christianity. Most of this happened during the “formative age” of the Baha’i Faith (1921-1944)
Growth of the Baha’i Faith has slowed down since 2000 because the new goal is consolidation and community building, so the emphasis is not spreading the Faith all over the world as it was before in the 20th century.
King James Bible Matthew 13:30
Let both grow together until the
harvest: and in the time of harvest I will say to the reapers, Gather ye together first the tares, and bind them in bundles to burn them: but gather the wheat into my barn.
New American Standard Bible Matthew 13:40
So just as the weeds are gathered up and burned with fire, so shall it be at the
end of the age.
Harvest time is the same time as the Day of Judgment when the wheat are separated from the chaff.
Those who recognize Baha'u'llah and follow Him are the wheat and those who reject Baha'u'llah are the chaff.
In the Bahá’í interpretation, the coming of each Manifestation of God is a Day of Judgment, but
the coming of the supreme Manifestation of Bahá’u’lláh is the great Day of Judgment for the world cycle in which we are living. The trumpet blast of which Christ and Muhammad and many other prophets speak is the call of the Manifestation, which is sounded for all who are in heaven and on earth—the embodied and the disembodied. The meeting with God, through His Manifestation, is, for those who desire to meet Him, the gateway to the Paradise of knowing and loving Him, and living in love with all His creatures. Those, on the other hand, who prefer their own way to God’s way, as revealed by the Manifestation, thereby consign themselves to the hell of selfishness, error and enmity.
Bahá’u’lláh and the New Era, p. 220
It was the same when Jesus appeared in earth. Those who recognized Jesus and followed Him were the wheat and those who rejected Jesus were the chaff.